甘薯钾肥分期施用研究进展  

Research Progress of Potassium Fertilizer Split Application on Sweet Potato

作　　者：王金强[1] 赵风芹[1] 李欢[1] 刘庆[1] 

机构地区：[1]青岛农业大学资源与环境学院,山东青岛266109

出　　处：《作物研究》2017年第4期448-452,共5页Crop Research

基　　金：现代农业产业技术体系建设专项资金(CARS-11-B-14);国家青年科学基金项目(31301854);青岛市青年专项基金(14-2-4-117-jch)

摘　　要：针对甘薯钾肥"一炮轰"耕作模式所带来的钾肥利用率低及甘薯生长后期脱钾肥的问题,综述了钾肥分期施用对甘薯的生长调控机制,探讨了钾肥分期施用在甘薯光合特性和淀粉代谢酶等方面的调控作用,钾肥分期施用中钾肥的利用效率等,旨在为甘薯产量和资源利用效率的提高提供理论和实践指导。Potassium has important effect on yield and quality of sweet potato.One-time application of K fertilizer led to low utilization of potassium fertilizer and potassium insufficient during the late growth stage.The regulation mechanism of potassium fertilizer split application on growth sweet potato was discussed,including the regulate effects on photosynthetic characteristics and starch metabolic enzymes of sweet potato,the potassium fertilizer utilization efficiency,in order to provide theoretical and practical guidance for improving the yield and potassium utilization efficiency of sweet potato.

关 键 词：甘薯 钾肥 分期施肥 

分 类 号：S531.062[农业科学—作物学]